What if you'd held IDXX?
A $1,000 investment in IDEXX Laboratories, Inc. (IDXX) at the month-end close of 1991-06 would be worth $620,530 at the close of 2026-08 — +61953.0% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $20,767.
Your scenario
Result
If you'd bought $1,000 at the start of each year
Value of $1,000 invested on January 1 of each year, held to 2026-08, dividends included.
Every year, $1,000 from 1991
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1991 | $1,000 | — |
| 1992 | $1,472 | +47.2% |
| 1993 | $2,864 | +94.6% |
| 1994 | $3,235 | +13.0% |
| 1995 | $8,447 | +161.1% |
| 1996 | $6,470 | -23.4% |
| 1997 | $2,864 | -55.7% |
| 1998 | $4,836 | +68.9% |
| 1999 | $2,898 | -40.1% |
| 2000 | $3,954 | +36.4% |
| 2001 | $5,124 | +29.6% |
| 2002 | $5,904 | +15.2% |
| 2003 | $8,318 | +40.9% |
| 2004 | $9,812 | +18.0% |
| 2005 | $12,937 | +31.9% |
| 2006 | $14,252 | +10.2% |
| 2007 | $21,075 | +47.9% |
| 2008 | $12,969 | -38.5% |
| 2009 | $19,213 | +48.1% |
| 2010 | $24,881 | +29.5% |
| 2011 | $27,664 | +11.2% |
| 2012 | $33,357 | +20.6% |
| 2013 | $38,235 | +14.6% |
| 2014 | $53,296 | +39.4% |
| 2015 | $52,423 | -1.6% |
| 2016 | $84,306 | +60.8% |
| 2017 | $112,423 | +33.4% |
| 2018 | $133,731 | +19.0% |
| 2019 | $187,728 | +40.4% |
| 2020 | $359,360 | +91.4% |
| 2021 | $473,372 | +31.7% |
| 2022 | $293,285 | -38.0% |
| 2023 | $399,029 | +36.1% |
| 2024 | $297,225 | -25.5% |
| 2025 | $486,362 | +63.6% |
| 2026 | $404,170 | -16.9% |
Best and worst month-end to buy
The best single month-end close to have bought IDXX was 1991-06 ($0.91): $1,000 then is $620,530 today. The worst was 2025-11 ($753): $1,000 then is $747.
FAQ
What would $1,000 in IDXX be worth today?
A $1,000 investment in IDEXX Laboratories, Inc. (IDXX) at the start of 1991 would be worth about $620,530 today, a total return of +61953.0%. Dividends are reinvested in these figures.
What were the best and worst years for IDXX?
IDEXX Laboratories, Inc. (IDXX)'s strongest calendar year since 1991 was 1995, a +161.1% return — $1,000 held through that year became about $2,611 by year-end. Its weakest year was 1997, at -55.7%.
Does the calculator include dividends and splits?
Yes where available. Prices are adjusted for both stock splits and reinvested dividends (total return), the same measure brokerages use.
How much would $100 per month in IDXX have grown?
Investing $100 at the end of every month since 1991-06 would have grown to about $2.54M on $42,300 invested.
Did IDXX beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $20,767. IDXX beat the S&P 500 by +2888.0% in total return.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
IDEXX Laboratories, Inc. (IDXX) historical total-return data from 1991-06 to 2026-08, reduced to month-end closes for the tables above.
Returns use adjusted close prices from Yahoo Finance historical data — adjusted for stock splits and reinvested dividends — the same convention used by major brokerages. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest available month-end close. Non-USD amounts are converted at historical month-end exchange rates (Yahoo Finance): to USD on the buy date and back to your currency at the latest rate, so the return reflects the currency move as well as the asset.
Month-end resolution means intra-month extremes are not captured in tables; the calculator uses exact trading-day closes where daily data is available. Figures ignore taxes, fees, and the currency effects of non-USD listings. History is not a forecast. Wall Street Regrets is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.